VulnerabilityModified
CVE-2020-24336
Therefore, when copying an address of an arbitrary length, a buffer overflow can occur.
CRITICAL 9.8EPSS 59.1%
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 59.1%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.
Description
An issue was discovered in Contiki through 3.0 and Contiki-NG through 4.5. The code for parsing Type A domain name answers in ip64-dns64.c doesn't verify whether the address in the answer's length is sane. Therefore, when copying an address of an arbitrary length, a buffer overflow can occur. This bug can be exploited whenever NAT64 is enabled.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 59.09% probability · 99th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-120
- Affected
- contiki-ng/contiki-ng · contiki-os/contiki
- Source
- cve@mitre.org
References
- https://us-cert.cisa.gov/ics/advisories/icsa-20-343-01Third Party Advisory, US Government Resource
- https://www.kb.cert.org/vuls/id/815128Third Party Advisory, US Government Resource
- https://us-cert.cisa.gov/ics/advisories/icsa-20-343-01Third Party Advisory, US Government Resource
- https://www.kb.cert.org/vuls/id/815128Third Party Advisory, US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.